PHP in the classroom

I work for a college as a web programmer using php and sometimes perl. I also teach a couple of classes there. We recently reworked our Associate curriculum so that we will produce web programmers. We want to teach them databasing, perl, and php. We also want them to become proficient with each. The reason I am posting this is because I have been unable to find any college textbooks for PHP. I've found plenty of books, but no text books. Does anyone have any experience teaching PHP? I've already decided to create my own course materials for the two php classes. The first class will be learning php and doing small programs. The second class will probably be one big project using more advanced features of php and putting it all together. I've also been considering writing a text book. That is the main reason I am posting this. I would like to get as much input from everyone using and developing php as possible. Textbooks don't make much money, but I would like the proceeds to go to the development of PHP. If you think you can add any thoughts to this, I would greatly appreciate it. I realize also that this list probably wasn't intended for this sort of discussion, so it might be best to send replies directly to me off list. If I don't get enough material for a book, but you would like to see the course materials I put together, I will be more than happy to share them with you. Thanks. Jason Stechschulte jpstech@nc.edu